LOUIS MORTON, Deputy Chief Historian, Department of the Army.
IT is now more than ten years since the atomic bomb exploded over Hiroshima and revealed to the world in one blinding flash of light the start of the atomic age. As the meaning of this explosion and the nature of the force unleashed became apparent, a chorus of voices rose in protest against the decision that had opened the Pandora's box of atomic warfare.
The justification for using the atomic bomb was that it had ended the war, or at least ended it sooner and thereby saved countless American--and Japanese--lives. But had it? Had not Japan already been defeated and was she not already on the verge of surrender? What circumstances, it was asked, justified the fateful decision that "blasted the web of history and, like the discovery of fire, severed past from present"?[i]
The first authoritative explanation of how and why it was decided to use the bomb came in February 1947 from Henry L. Stimson, wartime Secretary of War and the man who more than any other was responsible for advising the President.[ii] This explanation did not answer all the questions or still the critics. During the years that have followed others have revealed their part in the decision and in the events shaping it. These explanations have not ended the controversy, but they have brought to light additional facts bearing on the decision to use the bomb. With this information and with the perspective of ten years, it may be profitable to look again at the decision that opened the age of atomic warfare.
II. THE INTERIM COMMITTEE
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AUGUST 6, 1945, will remain forever a milestone in human annals. On that date the world's first atomic fission bomb was dropped upon Japan. The action may have been necessary for the purpose of saving American lives. But it was not merely another episode in the long history of man's inhumanity to man; and it was even more portentous than the final victory over Japan which quickly followed. For it marked the first harnessing of the sun's power on a large scale, with all the untold consequences for good and evil implicit in the achievement.
TO attempt to identify and interpret the changes wrought in American mentality by the Great War and its sequels is alluring but hazardous. So easily does the writer dip his pen in the pathetic fallacy. If he has lived through the period 1917-1927 with an intensity of emotion almost painful, and with every inherited patriotic fibre often set quivering, he is in danger of confusing his own consciousness with the collective mind, as Gibbon was said to have been unable to tell, at the end of his long studies, where his own personality left off and that of the Roman Empire began.
The debate in Washington about Iran's nuclear program has lost all sense of proportion. A nuclear-armed Iran would be a threat, but largely to the regime in Tehran.

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